It's the middle of June. Is it too late to plant flowers? No. Not even close.
Here's the thing about perennials: the first season isn't about the show so much as it is about the roots. There's an old gardener's line for it: the first year they sleep, the second year they creep, the third year they leap.
A native perennial you put in the ground this week spends all summer and fall digging in, building a root system down where you can't see it, and comes back next spring stronger.
So plant the tough natives now. These shrug off heat and want full sun:
- Black-eyed Susan, which may even bloom for you this year.
- Purple coneflower, a pollinator magnet that feeds goldfinches all winter.
- Butterfly weed, the native milkweed monarchs actually need. It loves warm soil, so now is perfect.
- Bee balm, if you want hummingbirds.
- Blazing star and coreopsis, both tough as nails.
- Goldenrod and asters, which bloom in fall, so you might get color out of them this very season.
There's exactly one rule for planting in summer heat: water them plenty. This first season, while the roots are still shallow, give them a good soak a couple times a week through the hot stretches. Once they're rooted in, you can walk away and they'll fend for themselves for years.
So no, you're not too late. You're right on time for the plant that comes back.